The cast of The Inbetweeners 2 at the Sydney premiere. From left: Blake Harrison, James Buckley, Simon Bird and Joe Thomas. Photo: Getty Images

"Dame Edna, she's got some sexual experience - she taught me a thing or two," actor James Buckley said in Sydney on Wednesday night.

Buckley walked the red carpet with his The Inbetweeners co-stars for the premiere of the hit British TV series' second movie spin-off, which charts the gormless quartet's backpacking trip from Sydney to Byron Bay in their car, the Mobile Virgin Conversion Unit.

The foursome take on Australia in the second movie outing for the hit TV show. Photo: Supplied

In the latest instalment, Jay lives up to his reputation for boasting about his fictional sex life, claiming he's bedded every woman in Australia including Elle Macpherson, and also had a threesome with Kylie and Dannii Minogue.

But Buckley, whose highlights of filming the flick Down Under include seeing his first fruit bat, revealed Dame Edna Everage and her wisteria hue offered his character the most memorable sexual experience.

Advertisement

"Beautiful dresses, she wore this wonderful gowns," he swoons.

Blake Harrison, who plays Neil, was more taken with the Australian bush - and not the kind you think he might mean.

"The outback was quite special, just to see a landscape like that because I grew up in London," Harrison says.

But the general consensus among the four actors was that Aussies speak funny.

"Things that are meant to be quite respected, like the Salvation Army, are called the Salvos, which I found weird," Harrison says.

Or renos.

"For renovations," elaborates Joe Thomas, who plays Simon.

"It feels like too much has been taken off there, because Renault is a French car maker.

"And doona," interjects Buckley.

"Everyone we ask to explain the origins of that word, like where it's come from, can't really tell us."

Simon Bird, who plays the smooth-talking Will, only learnt the other day what the word pluggers meant.

"Apparently they're flip-flops. Or thongs, as you would say," he says.

All the boys admit they've been overwhelmed by positive feedback on their second and final film.

"The one thing we didn't want to do is let down our fans who enjoyed the first film," Bird says as keen fans looked on in the cinema's foyer.

"That's why this film's taken so long, we wanted to make sure it was going to be as good as that first one.